Scientific American'sUploader: Kigabei 5 years ago Subscribe 6
I have seen and touched their longer more curvy wooden tunnel in Dayton. Over the next three decades, several other experimenters used it for aeronautical research, mostly in Europe. It was a long chamber with an air flow and a model plane with control surfaces you controlled. Big bundle of drinking straws….. Stimulating plant growth with ultrasonic vibrations; electrical discharges in a gas.